At-home COVID-19 tests have become commonplace for many households, but knowing when exactly to take a rapid test — or when to throw old ones out — isn't always straightforward. Here's what health ...

Taking a COVID-19 test at home seems simple enough: If you get a line, you're positive for the coronavirus. But what if your results aren't so obvious? For instance, if you only get a very faint line ...

When COVID first hit, waiting days for laboratory results from an ultrasensitive polymerase chain reaction (PCR) test was commonplace. Faster tests usable by anyone, anywhere, later became widely ...

You can no longer order free COVID-19 tests from the United States government. As of March 10, the government's free coronavirus test distribution program, COVIDtests.gov, is not currently accepting ...

Free at-home COVID tests are back for Michigan households. As of Thursday, Sept. 26, residents could visit covidtests.gov and request four test kits be shipped to them through the U.S. Postal Service ...

The Pac-12’s return to competition depends on one unexpected development solving two momentous problems. The late September arrival of rapid-response antigen tests — two months earlier than ...